diff --git a/README.md b/README.md
index 58f033b7..80b8dcf1 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@ This repo is managed with Nix + GNU stow
 # Installation Guide (for myself & those who are interested)
 - Generate image & boot
   We do this because the default one doesn't have all the utilities we want (e.g. disko).
-  - generate image `nix build .#nixosConfigurations.installer.config.system.build.isoImage`
+  - generate image `nom-build --attr nixosConfigurations.installer.config.system.build.isoImage`
   - `dd` the image to a flash drive (remember to `sync`)
   - boot off that flash drive